Apparatus for manufacturing pipes from metal strips.



, E. J. y11o-S1". AlPARATUS FOB MANUFACTURING 'FIRES FROM METAL STRIPS.

` l PPLIOATION FILED m1111710. '1909.4 'v f $189,045.*l Patented Apr.l11,1911 .d

U Nirsif APYARATUS Specification of Letters atent.

To all whom it may some1/m Be it known that I, EUGEN lomos asubjeot of the German lllmpsror, escl dent et" iflologne7 Germany, lisse 'im/ei l' certain new emi. useful Apparatus jfor Maimfaeturing Pipes from Metal Strips, of which the following is a specification.

The processes heretofore knows'. for mam featuring pipes in the cold by bending metal strips together and by Welding, soirlering, etc., the longitutlioel joints, comprise lossy operations. Now, irl order that the ini.- teriel will be capable of swirling all. these operations, ss each of them causes it to lose more and more o its solidity :mtl instit ity,

the motorini is annealed smi pickled before another operation is ca rrietl out.v

This repeated srmeeling miel especially the pielrling is very objeotionslole, as 2L sult of it, the tiriishefl pipe loes not possess the solidity, ete., of the rzmvimiterinl.

iow, the present iiiwhtion relstes to i process enel apparatus for ioaimsoturiiig pipes according towhioh the lvl" sro fmishe singlev operation. whereby the zmneslirig and piclfiig of the material are entirely clone sway with.

The igures of the seeoiiipsoyiiig drawing show the apparatus ttor 'carrying out lthis irooess7 Figure l being y:L longitudinal section; Fig. Verse elevation, partly in section slioiving the spriiigooiitrolletl rollers. Fig. t u. tramsI verse elevation partly in seetioh.I shoxilislg the Welding means; :mtl Fig. V :L

transverse section through the mechanism for removing-the Welding bur.

This apparatus comprises s drew bench carrying et one of its ends s heufl o in which the draw plate bis mounted amil held by means of e screw 0. 'The bending tool (l is mounted 'from the trout mi held iu place by a. screw e. Now, sitter o metal strip has been best in the houding tool d into the shape o' :L slotted. pipe, the edges ot the strip ormirig' the slot are yif'eliletl :it f mtl f. In orcler to prevent the pipe from ope ing again at the welding place owing; to its elastic properties, s pair oit rollers g; is mi ranged in front of escl behind the lutter, one pair being shown in Fig. 3. Euch of .2 s top plus; View. Fig. 3 s. trims! l l l l l l l i l l l l l l siretl outer oismeter iii se pairs oli rollers g is oni-rieti by er slide movable in guides h. O11 ese-h slide s'orio t whereby the rollers press ,i 'Q/ boo dthe I3-ipe, thus holding .the @tiges of the letter together. Each slide @rovitletl with a. bolt fr). on the screw threailetl port ot' i hieh s mit Z is :itljissts." ly engaged whiehr out seri-es to limit theinwsr. omvemeiit o the slide by coming iii contact with mi al. disent o mounted on the trame or sopport. The relier may therefore be stljustefl. for every diameter oi" pipeuse@ one spring issy 'be prevented from Causing its correspoiic farther than the other whereby a crease mightbe produced in the pipe.

The Welding can be Carried ou; electriffnlly 'with the ariel of electrodes 'orinutogouously by moans oloxygen and hydrogen fla-mes or by oxygen mtl acetylene. Upon psrtieular referentie to (l, the reference letters m Soul. m represent angle levers whish may either curry the electrodes, it the r-:elfliiig osrriefl ont electrionlly, or they' may curry burners, when the Welding is carried out by the use ot' leiiies. Each of thee. angle levers is 'provided with arri erm against which the acliustahle sores-fs vi nel n'. abut, in. order that the electrodes or burners iii-sy be eclissi .d according to the tlimueter of the pipe. Esch oiijle lever is provirileil. with s handle by whih the oleolrorles or burners may be iiisnipulsted when starting' or interrupting the welding oper-.1- tion. -Xs s result oit the iiolffiisg, a. wel ting hor formed on the pipe which Welding bis' muy he removed by the rotating Wheel 0. l? 5, which may he for ii tahoe, an Qmery wheel. The-bearings p of the shaft g carrying the emery Wheel rest on springs :mtl are adjusted by the screws s, so :is to suit the diameter of the pipo being rimontare-- tsrcfl. New, sftertho bur formed by the welding operstiou hss been reir-overl 'from the pipe, the latter receives the eil-.iet elei e.y :matrix t. the pipes must :LA oli-.rie u. uniform inner (lismoter, the lotf r is gagged si' the same time. 'To this escl the i'sgoflrel s mounted. ih the pipe so that the 'walls or the pipe are The Friteuses. Apr. iii. L

ling roller to ndveihee soj 35 inner diameter,

40 meters behind the matrix t.

mandrel is provided with a longitudinal e3;- tension of smaller diameter which runs the length of the machine and is provided on its threaded end u with a nut ,u2 which serves 5 as an abutment against the bending` tool d.

rlihe work is carried out in the following manner on this draw bench: First a round iron rod, which is thinner than a finished pipe, is connected by welding or otherwise with l0 the metal strip of which the pipe is to be made. Then the material is thin the metal strip can be' Wound on a wheel whereby very long pipes can be made by one drawing operation. When, however, the metal strip is thicker, straight bars of the latter are used. The aforesaid' round iron rod is passed through the plate (the bending tool (Z has not yet been put' into place,) then between the rollers g, under the emery wheel o and through the gage matrix t where it is grasped by the drawing pliers. The bending' tool Z is thereafter' mountedfin the bench and the latter is set going. Thus the slotted pipe is formed bythe tools Z), Z from the metal strip. The electrodes or burners are applied against the pipe so as to start the welding. rIhereai'ter the emery wheel is caused to rotate whereby the welding bur is removed. The pipe is thereafter drawn lthrough the matrix t by which the desired outer diameter is obtained and at the same time the outside surface of the pipe is 'rendered smooth and clean. Vhen it is desired at the same time toY gage exactly the the bench is stopped when the round ironrod Welded to the pipe is Well past the gaging matrix t. Then the said round iron rod and a small length of the pipe'are cut oil about l0() to 120 milli- After this the drawing mandrel u is introduced into the opening of the pipe where the pipe was cut until the extension of its shaft abuts with its shoulder against the bending tool d.

This end of the mandrel is secured to the bending tool d or to the bench itself. yThe end of the pipe which projects from the gaging matrix is then closed by .means oi' hammer blows as represented in Fig.- 2,"and

. is grasped by the drawing pliers after the bench has been started again, after which t-he entire metal strip is drawnt-hrough the bench without stopping the latter.

By the use of this apparatus pipes may be manufactured inone piece having any le h up to fifty meters.

claim: l.. `In a machine for forming a pipe from a sheet of metal, a suitable support, a guidemounted upon said support, a pair of slices movable 1n said guide-Way, a roller mounted upon each of said slides, saidiroll ers being vmounted with reference to each other so that they may a5 ing between them and a engage a pipe pass spring arranged on l l l Aerence to each other so that they each of said slides i'or u Ward cach other.

In a machine for Forming a pipe trom a sheet or" metal, a suitable support, a guideivay mounted upon said support, a pair oit' slides niovable in said guide-way, an roller mounted. upon each ot aid slides, springr arranged on each of said slides for urging said slides toward each other, said rollers being' mounted with reference to each other so that they may engage a pipe passing be tween them when said slides have reached the limit oi their movement toward each other and means for limiting theA movement of said slides.

3. ln a machine tor forming a pipe from a sheet of metal, a suitable support, a guideway mounted upon said support, a pair df slides nwvable in said guide-way, a roller mounted upon each of said slides, a spring arranged-on each of said slides for urging the slides toward each other, said rollers being mounted with reference to each other so that they may engage a pipe passing between them when said slides have reached the limit of their movement toward each other and adjustable means for limiting the .ovement of said slides.

et. ln a machine for forming a pipe from a sheet of metal, a suitable support, a guideway mounted upon said support said guideway consistiirgof a pair of substantially parallel ways, a. pair of slides movable in said guide-way, a roller mounted upon each ot said slides, a spring arranged on each slide. for urging said slides toward each other, said rollers being mounted with refmay enthem when ng the slides togage a pipe passing' between ,saidslides have reached the limit of their movement toward each other and adjustable means for. limiting the movement of said slides.

in a machine for forming a pipe from a sheet oi metal, a suitable support, a guide way l ountcd upon said support said guide way .,onsisting or' two substantially parallel ways, a pair of slides horizontall movable in said gui levvay, a vertically ex Itciuling stem mounted Aupon each of said slides, a roller carried by each of said stems, a spring arranged upon each of said slides for urging said slides toward each other, said rollers being mounted with rei?- erence to each other so that they may engage a pipe passing between them when said slides have reached the limit or their movement toward each other and adjustable means for limiting the movement of each of said slides.

6. In a machine for sheet of metal, a suitable support, a guide-1 way vmounted upon said support, a slide movable in said guidelway, a roller mounted upon said slide, spring" 'to urge said slide forming a pipe from' izestmny Wham 1 have, bewut@ set my hand m prawns@ tw@ w1 '-msse-bs.

EUGEN ULUS PG ST.

in 2L desired direction, a, 'belt mime-@351 to said slide sa bo't bng scmvnfead at its free and, a, nui adjwtaba on said?, screw-'threaded pmton mi@ bf, and an l 5 abutment mounted on said :Emme Wok; m F1] masseq:

engagement W'ln Said4 nut? L-ubsam,v (L kram M described.. 

